Improvement in nursing-bottles



sqw. FRANCE; Nursing-Bottle.

Patented June 24,1879.

dziarnej RAPN WASHP on. D C.

ceases and equilibrium in pressure is re- UNITED STATES PATENT OFFICE.

SIMON W. FRANCE, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN NURSING-BOTTLES.

Specification forming part of Letters Patent No. 216,734, dated J unc 24, 1879; application filed April 9,

To all whom it may concern Be it known that I, SIMON W. FRANCE, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Stopples for Nursing- Bottles, of which the following is a specification.

The object of my invention is to provide a simple and effective means of admitting air into a nursingbottle to replace the vacuum caused by the childs sucking, without liability of spilling the milk or other liquid contained in the bottle.

The invention consists in the combination of a stopple having a lateral air-hole communicatin g with the central hole, (in which the suction-pipe is in serted,) and a flexible suctionpipe arranged to close by its expansion the said air at the junction of the latter with the central hole at the instant when the suction stored.

In the accompanying drawings, Figure 1 represents a vertical section of a nursing-bottle provided with my improvement. Fig.2 is a vertical section of a modification of the same.

Similar letters of reference indicate like parts.

A is the stopple, and b the central hole in the same, through which the nursing-pipe or suction-pipe B passes. G is a small hole bored through the stopple A at the side of the central hole from some point of the stopple above the mouth of the bottle D, and endinginto the hole I), so as to form a communication to admit air to the central hole, I), and thence into the bottle D, in direction of the arrow, when the inner end of the hole O is not tightly closed by the rubber pipe B.

The pipe B, when in its normal condition, keeps theiuner end of the hole O closed, as shown in the drawings; but when the pipe is ever so little flattened at the point a, in consequence of the vacuum caused by the sucking of the child, and aided by the air-pressure through. the hole- 0, space enough will be left space below the hole 0 at a, to be closed by the lateral expansion of the pipe, than can be uncovered by a flattening of the pipe, due to the ordinary sucking of the child, without extra exertion. Therefore, whenthe hole O is bored at right angles to the hole b, the latter hole should be enlarged slightly to within the proper distance of the hole 0 to fulfill this condition, as shown in Fig. 2. This device may be advantageously applie also for other purposes.

I am aware that a stopple has been made in which an air-hole bored at right angles to V the central hole is covered on the outside by a special valve, (see Patent No. 120,575,) and I do not claim any such device.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The stopple A, having an air-hole, O, coinmunicating with the central hole, I), in combina tion with a flexible suction-pipe, B, accurately fitting said hole I) below the entrance of the airhole, and acting in the central hole, b, as a valve to close by expansion the air-hole O at the junction of the latterwith the central hole, I), when the suction ceases.

SIMON YV. FRANCE.

Witnesses:

A. W. ALMQVIST, SIGFRID LINDHAGEN. 

